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/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
/*
* Copyright (C) 2015 Rob Clark <robclark@freedesktop.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include "util/ralloc.h"
#include "util/hash_table.h"
#include "ir3_cache.h"
#include "ir3_shader.h"
static uint32_t
key_hash(const void *_key)
{
const struct ir3_cache_key *key = _key;
uint32_t hash = _mesa_fnv32_1a_offset_bias;
hash = _mesa_fnv32_1a_accumulate_block(hash, key, sizeof(*key));
return hash;
}
static bool
key_equals(const void *_a, const void *_b)
{
const struct ir3_cache_key *a = _a;
const struct ir3_cache_key *b = _b;
// TODO we could optimize the key shader-variant key comparison by not
// ignoring has_per_samp.. not really sure if that helps..
return memcmp(a, b, sizeof(struct ir3_cache_key)) == 0;
}
struct ir3_cache {
/* cache mapping gallium/etc shader state-objs + shader-key to backend
* specific state-object
*/
struct hash_table *ht;
const struct ir3_cache_funcs *funcs;
void *data;
};
struct ir3_cache * ir3_cache_create(const struct ir3_cache_funcs *funcs, void *data)
{
struct ir3_cache *cache = rzalloc(NULL, struct ir3_cache);
cache->ht = _mesa_hash_table_create(cache, key_hash, key_equals);
cache->funcs = funcs;
cache->data = data;
return cache;
}
void ir3_cache_destroy(struct ir3_cache *cache)
{
/* _mesa_hash_table_destroy is so *almost* useful.. */
hash_table_foreach(cache->ht, entry) {
cache->funcs->destroy_state(cache->data, entry->data);
}
ralloc_free(cache);
}
struct ir3_program_state *
ir3_cache_lookup(struct ir3_cache *cache, const struct ir3_cache_key *key,
struct pipe_debug_callback *debug)
{
uint32_t hash = key_hash(key);
struct hash_entry *entry =
_mesa_hash_table_search_pre_hashed(cache->ht, hash, key);
if (entry) {
return entry->data;
}
struct ir3_shader_variant *bs = ir3_shader_variant(key->vs, key->key, true, debug);
struct ir3_shader_variant *vs = ir3_shader_variant(key->vs, key->key, false, debug);
struct ir3_shader_variant *fs = ir3_shader_variant(key->fs, key->key, false, debug);
struct ir3_program_state *state =
cache->funcs->create_state(cache->data, bs, vs, fs, &key->key);
state->key = *key;
/* NOTE: uses copy of key in state obj, because pointer passed by caller
* is probably on the stack
*/
_mesa_hash_table_insert_pre_hashed(cache->ht, hash, &state->key, state);
return state;
}
/* call when an API level state object is destroyed, to invalidate
* cache entries which reference that state object.
*/
void ir3_cache_invalidate(struct ir3_cache *cache, void *stobj)
{
hash_table_foreach(cache->ht, entry) {
const struct ir3_cache_key *key = entry->key;
if ((key->fs == stobj) || (key->vs == stobj)) {
cache->funcs->destroy_state(cache->data, entry->data);
_mesa_hash_table_remove(cache->ht, entry);
return;
}
}
}
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